Slang Dictionary

O-sign definition

  1. n.
    the rounded, open mouth of a dead person. (A semijocular usage. Hospitals. See also Q-sign.) : The guy in room 226 is giving the O-sign.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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